added module-info.java to make it possible to use the library with latest modularization java. I must say I am not guru on modules, I see that the code is working with my examples that's why I pushed it.
improved some UI, the moving dockablenode was loosing CSS that is fixed.
added intellij run configs, it is hard to figure out how to run javafx in linux :)
I am opening this PR just to share, that I upgraded
hoping all is good, if you see any problem feel free to inform me. I will fix it. I am using this library in https://github.com/ozkanpakdil/swaggerific
I also published this on central maven repo https://mvnrepository.com/artifact/io.github.ozkanpakdil/dockfx